Which system is involved in food processing and waste elimination?

The digestive system is responsible for food processing and waste elimination in the human body. It includes organs such as the mouth, esophagus, stomach, intestines, liver, and pancreas, which work together to break down food into nutrients that can be absorbed and utilized by the body. During this process, waste products that cannot be absorbed are formed and eventually eliminated from the body through the intestines. This system ensures that the body receives the essential nutrients needed for energy and proper functioning while also managing the waste generated from digestion.

Other systems mentioned do not play a direct role in food processing. The circulatory system primarily transports blood, nutrients, and oxygen throughout the body. The respiratory system is focused on gas exchange, taking in oxygen and expelling carbon dioxide. Meanwhile, the musculoskeletal system supports the body and facilitates movement rather than processing food or waste.